DFI ECM Tests W/Codes

• Diagnosis & Testing
  • Notes
  • Diagnostic Tools
    • Notes
    • Jumper Wires Needed:
  • Basic Diagnostic Procedures
  • Diagnostic Displays
  • Entering Diagnostic Mode
  • Trouble Code Output
  • Clearing Trouble Codes
    • ECM Codes
    • BCM Codes
  • Exiting Diagnostic Mode
  • Status Light Displays ECM & BCM
    • Notes
    • "AUTO" Indicator Light
    • "ECON" Indicator Light
    • "OFF" Indicator Light
    • "FRONT DEFOGGER" Indicator Light
    • "REAR DEFOGGER" Indicator Light
    • "OUTSIDE TEMP" Indicator Light
    • "AUTO FAN" Indicator Light
    • "HI FAN" Indicator Light
    • "LO FAN" Indicator Light
    • "°F" Indicator Light
    • "°C" Indicator Light
  • Code ".7.0" Entering Testing Mode
    • Notes
    • ECM Switch Tests
    • Code "E.7.2"
    • Code "E.7.4"
    • Code "E.7.5"
    • Code "E.7.6"
    • Code "E.7.7"
    • Code "E.7.8"
    • ECM Data Display
    • ECM Snapshot
    • ECM Output Cycling
    • ECM Output Override
    • BCM Data Display
    • ECC Program Override
    • Cooling Fans Override
• Performance Flow Charts
• Adjustments
• Component Locations
• Circuit Connections
• Connector Identification
• DFI System Diagnostic Charts
  • Notes
  • Trouble Code-To-Circuit Menu
  • DFI System Check
    • Notes
    • Integrator Operation
  • Chart A1 - "Service Now/Soon" Lights On, No Codes Present
    • Notes
    • Flow Chart "A" Of Chart A1
    • Flow Chart "B" Of Chart A1
  • Chart A2 - Inoperative "Service Now/Soon" Lights
  • Chart A3 - No Start Or Stall After Start
  • Chart A4 - Fuel System Diagnosis
  • Chart A5 - Injector System Diagnosis Or Injector CKT Test
    • Notes
    • Diagnosis: Chart "A"
    • Circuit Test: Chart "B"
  • Chart A6 - Open Loop Diagnosis
  • Chart A7 - Lean Exhaust Signal
  • Chart A8 - Rich Exhaust Signal
  • Chart A9 - Oxygen Sensor Diagnosis
  • Chart C1 - ECM Replacement Check
  • Chart C3 - Canister Purge Diagnosis
    • Notes
    • Solenoid Vacuum Check
  • Chart C4 - Electronic Spark Timing (Est) System
  • Chart C6 - Air Management Diagnosis
  • Chart C7 - EGR Diagnosis
    • Notes
    • Diagnostic Aids
  • Chart C8 - Viscous Converter Clutch (VCC) System
• Self-Diagnostic System Diagnostic Charts
  • Notes
  • Trouble Code-To-Circuit Menu
  • Self-Diagnostic System Check
  • Self-Diagnosis Chart A1 - Inoperative "Service A/C" Light
  • Self-Diagnosis Chart B1 - Inoperative "Service A/C" Light
  • Self-Diagnosis Chart B2 - Both "Service Now/Soon" Inoperative
  • Self-Diagnosis Charts C1-C6 - Display Panel Diagnosis
• Hard Or Intermittent Trouble Code Diagnostic Charts
  • Notes
  • Trouble Code-To-Circuit Menu
  • Multiple Trouble Codes (Stored Hard)
  • Code E12 - No Distributor (Tach) Signal
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
  • Hard Or Intermittent Code E13 - O2 Sensor Not Ready
    • Notes
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
  • Code E14 - Shorted Coolant Sensor Circuit
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
  • Code E15 - Open Coolant Sensor Circuit
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
  • Code E16 - Generator Voltage Out Of Range
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
  • Code E18 - Open Crank Signal Circuit
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
  • Code E19 - Shorted Fuel Pump Circuit
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
  • Hard Or Intermittent Code E20 - Open Fuel Pump CKT (1 Of 2)
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
  • Hard Or Intermittent Code E20 - Fuel Fuse Blown (2 Of 2)
    • Notes
    • Notes On Intermittents
  • Code E21 - Shorted TPS Circuit
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
  • Code E22 - Open TPS Circuit
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
  • Code E23 - Est Circuit Problem
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Possible causes of code "E23" are:
  • Code E24 - Speed Sensor Circuit Problem
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
  • Code E26 - Shorted Throttle Switch Circuit
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
  • Code E27 - Open Throttle Switch Circuit
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
  • Code E28 - Open 3RD Or 4TH Gear Circuit
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
  • Hard Or Intermittent Code E30 - Idle Speed CTRL CKT Problem
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
  • Code E31 - Shorted Map Sensor Circuit
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
  • Code E32 - Open Map Sensor Circuit
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittent
  • Code E34 - Map Signal To High
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
  • Code E37 - Shorted Mat Sensor Circuit
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
  • Code E38 - Open Mat Sensor Circuit
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
  • Hard Or Intermittent Code E39 - VCC Engagement Problem
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
  • Code E40 - Open Power Steering Pressure Switch (PSPS) Circuit
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
  • Hard Or Intermittent Code E44 - Lean Exhaust Signal
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
  • Hard Or Intermittent Code E45 - Rich Exhaust Signal
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
  • Code E47 - BCM To ECM Data
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
  • Code E48 - EGR System Fault
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
    • Vacuum Test
  • Code E52 - ECM Memory Reset
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
  • Code E53 - Distributor Signal Interrupt
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
  • Code E55 - TPS Out Of Adjustment
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
  • Code E59 - Transmission Temperature Sensor Circuit
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
  • Code E60 - Cruise Control Engaged (Trans In Park Or Neutral)
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
  • Code E63 - Cruise Control (Car Speed/Set Speed) Difference
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
  • Code E64 - Acceleration Too High (Cruise Engaged)
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
  • Code E65 - Coolant Temperature Too High (Cruise Engaged)
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
  • Code E66 - Engine Rpm Too High (Cruise Engaged)
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
  • Code E67 - "Set/Coast" Or "Resume/ACCEL" CKTS Shorted
    • Test Conditions:
    • Failure Conditions:
    • Action Taken:
    • Notes On Intermittents
  • Code E.7.1 - Cruise Control/VCC Brake Circuit
    • Notes
    • Notes On Intermittents
  • Code E.7.2 - Throttle Switch Circuit
    • Notes
    • Notes On Intermittents
  • Code E.7.4 - Park/Neutral (NSBU) Switch Circuit
    • Notes
    • Notes On Intermittents
  • Code E.7.5 - Cruise On/Off Circuit
    • Notes
    • Notes On Intermittents
  • Code E.7.6 - Cruise "Set/Coast" Circuit
    • Notes
    • Notes On Intermittents
  • Code E.7.7 - "Resume/ACCEL" Circuit
    • Notes
    • Notes On Intermittents
  • Code E.7.8 - Power Steering Pressure Switch (PSPS) Circuit
    • Notes
    • Notes On Intermittents
• Wiring Diagrams